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CC_Minutes_2006_0320
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CC_Minutes_2006_0320
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7/17/2007 9:35:28 AM
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4/3/2006 10:28:07 AM
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Roseville City Council
Document Type
Council Minutes
Meeting Date
3/20/2006
Meeting Type
Study
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<br />r <br /> <br />March 2006 <br /> <br />8 <br /> <br />053-2442 <br /> <br />r <br /> <br />. Flush with approximately 5 gallons of low phosphate detergent solution (liquinox or similar); <br />. Flush with tap water to remove detergent solution; <br />. Flush with distilled water; <br />. Flush with isopropyl alcohol; and <br />. Flush with distilled water. <br /> <br />r <br /> <br />r <br /> <br />2.4.4 Quality Assurance/Quality Control Samples <br /> <br />r <br /> <br />In addition to natural groundwater samples collected under procedures described above, quality <br />assurance/quality control (QAlQC) samples will be collected at the following frequency to allow <br />subsequent data validation: <br /> <br />r <br /> <br />. Rinsate blanks - one per 20 samples; and <br />. Field duplicate - one per 20 samples. <br /> <br />I <br />I <br /> <br />Ten percent of the total number of soil and water samples analyzed in the mobile laboratory will be <br />submitted to a fixed laboratory for confirmation analysis. <br /> <br />2.5 Vapor Survey <br /> <br />l <br /> <br />We propose to conduct a limited vapor survey in on-site structures and any utility manways that may <br />be present immediately near the site to ensure elevated concentrations of organic vapors are not <br />present in these spaces. The vapor survey will be conducted by measuring concentrations ofVOCs in <br />ambient air in various confined areas in the basement of the facility, in the First and Second <br />Additions, and any nearby manways using a photoionization detector. Tetrachloroethene <br />concentrations in these locations will also be measured using Draeger Tube samplers with detection <br />ranges from 0.1 to 10 ppm. <br /> <br />I <br />r <br /> <br />( <br />r <br /> <br />A soil vapor survey will be completed at the site in the future to determine concentration of organic <br />vapors in the subsurface, both near the source area and above the VOC plume in groundwater. This <br />information will be used to direct future development scenarios for the property. <br /> <br />3.0 SAMPLE ANALYSIS AND DATA EV ALVA TION PROCEDURES <br /> <br />All groundwater samples will be analyzed for parameters listed in Table 1. Included in Table 1 are <br />reporting limits for each analyte, sample container, and requisite preservatives. <br /> <br />I <br /> <br />3.1 Data Evaluation <br /> <br />I <br /> <br />Following receipt of laboratory analytical data, results will be evaluated to provide a reasonable <br />assurance that the data are adequate for the intended use. QA review of analyses will be completed <br />for all laboratory data based on the following method-specific criteria: <br /> <br />L <br /> <br />. Holding times; <br />. Blanks; <br />. Completeness; <br />. Precision; and <br />. Accuracy. <br /> <br />L <br /> <br />l <br /> <br />( <br />
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